Abstract

Two different measurement methods are described that indicate that the Raman cross section of O₂($a{ }^1{\mathrm{\Delta }}_g$), ${\sigma }_a=$ ($0.45\pm 0.02$) ${\sigma }_X$, where ${\sigma }_X$ is the Raman cross section of O₂($X{ }^3{{\mathrm{\Sigma }}_g}^{-}$). Spontaneous Raman scattering is a potentially useful technique for measuring the singlet O₂ yield in high-power oxygen iodine lasers. For the full potential of this method to be realized, one must determine ${\sigma }_{{\mathrm{O}}_2\left(a\right)}$ to measure the yield directly.

© 1997 Optical Society of America

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